Question

On GT road, three consecutive traffic signals after 36,42 and 72s. If the lights are first switched on at 9.a.m, then at what time will they change simultaneously ​

Answer 1

Answer:

504 seconds = 8 minutes 24 seconds. The lights are first switched on at 9:00 A.M. Therefore, the correct option is B. The traffic lights at three different road crossing change after 24 seconds, 30 seconds and 36 seconds respectively.

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